Anti-seismic drawer type power distribution cabinet

Abstract

An anti-seismic drawer type power distribution cabinet comprises a cabinet body, an anti-seismic base is installed at the bottom of the cabinet body, and the anti-seismic drawer type power distribution cabinet comprises a plurality of damping springs and dampers which are connected between an upper installation plate and a lower bottom plate of the anti-seismic base; drawer guide rails are arranged on two side walls in the cabinet body and comprise a fixed guide rail and a movable guide rail, and a buffer rubber pad is arranged between the fixed guide rail and the movable guide rail; an electrical element mounting plate is arranged in the drawer unit and is connected with the bottom of the drawer unit through a damping rubber column; a pressing device is arranged in the drawer unit and comprises a pressing plate and an adjusting screw rod, the pressing plate is located on the upper portion of the interior of the drawer unit, and the adjusting screw rod penetrates through the bottom of the drawer unit and is in threaded connection with the pressing plate. The shock-resistant base absorbs and disperses impact force at the bottom of the cabinet body, the drawer guide rail buffer rubber pads prevent the drawer from falling off and shaking, the shock-absorbing rubber columns in the drawer absorb shock for electrical elements, the pressing device limits the drawer from jumping, and the shock-resistant performance of the drawer type power distribution cabinet is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of power equipment, concretely is a kind of anti-seismic drawer type switchboard. BACKGROUND

[0002] In today's power system, drawer type switchboard is widely used in various industrial and civil places, and undertakes the key task of distributing, controlling and protecting power. However, with the frequent occurrence of global earthquakes and other natural disasters, the existing drawer type switchboard has exposed serious problems of insufficient anti-seismic performance.

[0003] When an earthquake occurs, the traditional drawer type switchboard mainly relies on the metal structural strength of the cabinet body to resist the seismic force. This single structural defense method has many drawbacks, for example, the cabinet body is prone to deformation under the impact of strong seismic waves, causing the drawer to be unable to be normally pulled out or the internal electrical components to be damaged by extrusion. The drawer guide rail lacks effective buffer mechanism, and the drawer unit is easily detached from the guide rail during an earthquake, causing electrical connection interruption and internal line confusion, which in turn causes sudden interruption of power supply, bringing great inconvenience and economic loss to production and life. At the same time, for the internal electrical components, the existing installation method does not fully consider shock absorption protection, and the probability of failure of electrical components due to excessive impact during earthquake vibration is high, affecting the stability and reliability of the power system.

[0004] To solve these problems, researchers have also tried some improvement measures. Some existing technologies optimize the fixing method of the cabinet body, such as using stronger foundation bolts or increasing the connection points between the cabinet body and the ground, but this method only enhances the stability of the cabinet body as a whole, and has limited protection effect on the drawer unit, and cannot effectively solve the problems of drawer detachment and internal component damage due to vibration. Some others add simple rubber pads inside the cabinet body to buffer the vibration, but due to the distribution and performance limitations of the rubber pads, it is difficult to cope with complex and variable seismic forces, and cannot provide comprehensive and sufficient anti-seismic protection for the switchboard during a large earthquake. SUMMARY

[0005] To solve the problems raised in the background art, the utility model provides an anti-seismic drawer type switchboard, which absorbs and disperses the impact force at the bottom of the cabinet body through the anti-seismic base, prevents the drawer from being detached and shaken by the drawer guide rail buffer rubber pad, reduces the vibration of electrical components by the drawer internal shock absorption rubber column, and limits the jumping of the drawer by the cabinet body top compression device, effectively improving the anti-seismic performance of the drawer type switchboard.

[0006] To solve the above technical problems, the technical scheme provided by the utility model is as follows:

[0007] An anti-seismic drawer type switchboard, comprising a cabinet body, a drawer unit, an electrical component mounting plate, a drawer guide rail, an anti-seismic base, a compression device and a ventilation and heat dissipation assembly.

[0008] The cabinet body is internally provided with a space for accommodating the drawer units;

[0009] Each of the drawer units has an independent shell, the front end of the drawer unit shell is provided with an operation handle for facilitating the pull-out operation of the drawer, the rear part of the drawer unit is provided with an electrical connection interface for connecting with the main circuit and control circuit inside the cabinet body, and the drawer unit is slidingly installed in the cabinet body and can be smoothly pulled out and pushed in along a specific direction inside the cabinet body, so as to facilitate the installation, maintenance and repair of the internal electrical components;

[0010] The electrical component mounting plate is located inside the drawer unit and connected with the bottom of the drawer unit through a shock-absorbing rubber column, the shock-absorbing rubber column is internally provided with a hollow cavity filled with sound-absorbing cotton, the electrical components are mounted on the electrical component mounting plate, the shock-absorbing rubber column can provide a buffer for the electrical components in the case of earthquake or other vibration, reducing the damage of vibration to the electrical components, on the other hand, the sound-absorbing cotton can absorb the noise generated by the electrical components during operation, reducing the noise level inside the cabinet body, and the electrical component mounting plate is made of insulating material to ensure the electrical insulation performance between the electrical components and between the electrical components and the shell of the drawer unit;

[0011] The drawer guide rails are respectively installed on the two side walls inside the cabinet body, including fixed guide rails and movable guide rails, the fixed guide rails are fixedly connected with the side walls of the cabinet body through welding or bolt connection, the movable guide rails are fixedly connected with the side walls of the drawer unit, and a shock-absorbing rubber pad is arranged between the fixed guide rails and the movable guide rails, the surface of the shock-absorbing rubber pad is provided with anti-skid lines, when the drawer unit moves in the guide rails, the shock-absorbing rubber pad can reduce the hard collision and friction between the drawer unit and the cabinet body due to vibration or operation, and the anti-skid lines can increase the stability of the drawer unit in the guide rails, preventing the drawer unit from accidentally coming out in the case of earthquake or other abnormal conditions;

[0012] The anti-seismic base is located at the bottom of the cabinet body and is tightly connected with the cabinet body bottom, including an upper mounting plate, a lower bottom plate and a plurality of shock-absorbing springs and dampers connected between the upper mounting plate and the lower bottom plate, the shock-absorbing springs are sleeved outside the dampers, and the shock-absorbing springs and the dampers are uniformly distributed in a matrix between the upper mounting plate and the lower bottom plate, the upper mounting plate is fixedly connected with the cabinet bottom plate through welding or bolt connection, and the lower bottom plate is fixed to the installation foundation surface through foundation bolts, when an earthquake occurs, the shock-absorbing springs first elastically buffer the impact force received by the cabinet, and the dampers inhibit the excessive rebound of the springs through their damping characteristics, so that the cabinet can quickly recover to a stable state and reduce the impact of aftershocks, and the two work together to effectively disperse and absorb the vibration energy from the ground, protecting the cabinet and internal components from damage by seismic force;

[0013] The pressing device is located in the drawer unit, comprising a pressing plate and an adjusting screw rod, the pressing plate is located above the inside of the drawer unit, the adjusting screw rod penetrates through the bottom of the drawer unit and is in threaded connection with the pressing plate, the distance between the pressing plate and the drawer unit can be adjusted by rotating the adjusting screw rod, the lower surface of the pressing plate is provided with a rubber buffer layer, in the normal state, the height of the pressing plate can be adjusted to exert appropriate pressure on the drawer unit, further limiting the jumping range of the drawer unit in the earthquake or other vibration, the rubber buffer layer avoids damage to the drawer unit by the pressing plate, and ensures that the drawer unit will not be damaged due to hard contact while being subjected to the pressing force;

[0014] The ventilation and heat dissipation assembly comprises ventilation and heat dissipation holes formed in the side wall of the cabinet body and dustproof filter screens installed in the ventilation and heat dissipation holes. The ventilation and heat dissipation holes can ensure that the air in the cabinet body can circulate effectively, and the heat generated by the electrical elements during operation can be dissipated in time. The dustproof filter screens can effectively prevent dust, sundries and the like from entering the cabinet body, and prevent the electrical elements from being poor in heat dissipation or causing electrical faults due to dust accumulation.

[0015] Preferably, the front side plate of the cabinet body is provided with a transparent observation window corresponding to the position of each drawer unit. The transparent observation window is made of high-strength and impact-resistant transparent material, including tempered glass or organic glass, and can clearly observe the working state and connection condition of the electrical elements in the drawer unit, facilitating the daily inspection and preliminary fault judgment of the operator without opening the drawer unit. The edge of the observation window is sealed with a sealing rubber strip to prevent dust, water vapor and the like from entering the cabinet body.

[0016] Preferably, the damper is a hydraulic damper, which is filled with damping oil. The viscous resistance of the damping oil in the piston movement process is used to consume the vibration energy.

[0017] Preferably, the connection mode between the buffer rubber pad and the fixed guide rail and the movable guide rail adopts a clamping groove type or a gluing type, ensuring firm connection and preventing falling off during long-term use.

[0018] Preferably, the connection mode between the shock-absorbing rubber column and the electrical element mounting plate and the bottom of the drawer unit adopts an embedded type or a bolt connection.

[0019] Preferably, the adjusting screw rod of the pressing device is provided with a rotating handle at the top, and the connecting part between the adjusting screw rod and the top of the cabinet body adopts a sealing bearing or a sealing sleeve to prevent dust, water vapor and the like from entering the cabinet body and affecting the rotating flexibility and service life of the screw rod.

[0020] Preferably, the dustproof filter screen adopts a multi-layer structure, including a primary efficiency filter layer, a medium efficiency filter layer and a high efficiency filter layer, which can effectively filter dust particles of different particle sizes. The frame of the dustproof filter screen is fixed in the ventilation and heat dissipation hole by a clamping groove or a bolt, facilitating disassembly and cleaning replacement.

[0021] Preferably, the drawer unit and the cabinet body are connected by the drawer guide rail, and the electrical components are connected by the electrical connection interface and the corresponding electrical connection.

[0022] Compared with the prior art, the utility model has the advantages of:

[0023] 1. The utility model discloses a shockproof base that is composed of damping springs and dampers is arranged at the bottom of the cabinet body, and is evenly distributed in a matrix form, effectively buffers the up-down vibration during the earthquake, and restrains the vibration rebound; the buffer rubber pad between the drawer guide rails reduces the left-right shaking of the drawer unit; the shock-absorbing rubber column in the drawer unit protects the electrical components; the pressing device at the top of the cabinet body limits the jumping of the drawer unit. The multiple cooperative effects form a comprehensive and multi-level shockproof system, greatly improve the survival ability of the power distribution cabinet in natural disasters such as earthquakes, significantly reduce the risk of equipment damage and power interruption caused by earthquakes, and guarantee the continuity and stability of the power system.

[0024] 2. The hollow cavity in the shock-absorbing rubber column is filled with sound-absorbing cotton, which can absorb the noise generated by the electrical components during operation, reduce the noise pollution during the operation of the power distribution cabinet, and improve the working environment. At the same time, the ventilation and heat dissipation assembly of the side wall of the cabinet body not only ensures good ventilation and heat dissipation effect and maintains the appropriate working temperature of the electrical components, but also effectively prevents dust from entering the interior of the cabinet and causing electrical failure. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the utility model;

[0026] Figure 2 It is a sectional view structural schematic diagram of the drawer unit of the utility model;

[0027] Figure 3 It is the utility model Figure 1 enlarged schematic diagram of A;

[0028] Figure 4 It is the utility model Figure 2 enlarged schematic diagram of B.

[0029] 1, cabinet body;2, drawer unit;3, shockproof base;31, upper mounting plate;32, lower bottom plate;33, damping spring;34, damper;4, drawer guide rail;41, fixed guide rail;42, movable guide rail;43, buffer rubber pad;5, electrical component mounting plate;6, shock-absorbing rubber column;61, hollow cavity;62, sound-absorbing cotton;7, pressing device;71, pressing plate;72, adjusting screw;73, rubber buffer layer;8, ventilation and heat dissipation assembly. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0031] As shown in Figure 1 The utility model provides a kind of technical scheme: a kind of anti-vibration drawer type power distribution cabinet, including cabinet 1 and the drawer unit 2 of being installed in the inside of cabinet 1, the bottom of the cabinet 1 is equipped with anti-vibration base 3, the anti-vibration base 3 includes upper mounting plate 31, lower bottom plate 32 and the multiple shock absorber springs 33 and damper 34 connected between upper mounting plate 31 and lower bottom plate 32, the shock absorber spring 33 is sleeved in the outer periphery of damper 34, and shock absorber spring 33 and damper 34 are evenly distributed in the form of matrix between upper mounting plate 31 and lower bottom plate 32, upper mounting plate 31 is fixed with the bottom plate of cabinet 1 by bolt connection, and lower bottom plate 32 is fixed on the installation base surface by anchor bolt.

[0032] Specifically, the damper 34 is a hydraulic damper 34, which is filled with damping oil

[0033] Specifically, the inside of cabinet 1 both side walls is equipped with drawer guide rail 4, the drawer guide rail 4 includes fixed guide rail 41 and movable guide rail 42, the fixed guide rail 41 and movable guide rail 42 are fixedly connected with the side wall of cabinet 1 and the side wall of drawer unit 2 by bolt, and buffer rubber pad 43 is arranged between the fixed guide rail 41 and movable guide rail 42, the surface of buffer rubber pad 43 is provided with anti-skid lines, and the connection between the fixed guide rail 41 and movable guide rail 42 is in the form of clamping groove.

[0034] Specifically, the inside of the drawer unit 2 is equipped with electrical element mounting plate 5, the electrical element mounting plate 5 is connected with the bottom of the drawer unit 2 by shock-absorbing rubber column 6, the shock-absorbing rubber column 6 is internally provided with hollow cavity 61, the hollow cavity 61 is filled with sound-absorbing cotton 62, electrical elements are mounted on electrical element mounting plate 5, and the connection between shock-absorbing rubber column 6 and electrical element mounting plate 5 and the bottom of drawer unit 2 is in the form of embedded connection.

[0035] Specifically, the drawer unit 2 is internally provided with a pressing device 7, the pressing device 7 comprises a pressing plate 71 and an adjusting screw 72, the pressing plate 71 is located above the inside of the drawer unit 2, the adjusting screw 72 penetrates through the bottom of the drawer unit 2 and is threadedly connected with the pressing plate 71, the distance between the pressing plate 71 and the drawer unit 2 can be adjusted by rotating the adjusting screw 72, a rotating handle is arranged on the top of the adjusting screw 72 of the pressing device 7, the shape of the rotating handle is "L" type, a sealing bearing is arranged at the connecting position between the adjusting screw 72 and the top of the cabinet 1, and a rubber buffer layer 73 is arranged on the lower surface of the pressing plate 71.

[0036] Specifically, the side wall of the cabinet 1 is provided with a ventilation and heat dissipation assembly 8, which comprises ventilation and heat dissipation holes arranged in the side wall of the cabinet 1 and dustproof filter screens mounted in the ventilation and heat dissipation holes, the dustproof filter screens adopt a multi-layer structure, comprising a primary filter layer, a medium filter layer and a high filter layer, and the frame of the dustproof filter screen is fixed in the ventilation and heat dissipation hole through bolts.

[0037] Specifically, the front side plate of the cabinet 1 is provided with a transparent observation window corresponding to the position of each drawer unit 2, the transparent observation window is made of tempered glass, and the edge of the observation window is sealed by a sealing rubber strip.

[0038] Specifically, each drawer unit 2 has an independent shell, the front end of the drawer unit 2 shell is provided with an operation handle, and the rear part of the drawer unit 2 is provided with an electrical connection interface.

[0039] Specifically, the electrical connection between the electrical components and the electrical connection between the electrical components and the drawer unit 2 is realized through the electrical connection interface and the corresponding electrical connection.

[0040] The working principle of the anti-seismic drawer type power distribution cabinet according to the embodiment of the application is as follows:

[0041] In normal operation, the electrical components in the drawer type power distribution cabinet are connected with the external circuit through the electrical connection interface for power distribution, control and other operations. The ventilation and heat dissipation holes in the ventilation and heat dissipation assembly 8 ensure the air circulation in the cabinet 1, and the dustproof filter screens prevent dust from entering, so that the electrical components can work in a suitable temperature environment. The operator can conveniently pull out the drawer unit 2 through the operation handle at the front end of the drawer unit 2 to perform installation, maintenance or repair operations on the electrical components, and the transparent observation window facilitates the observation of the situation in the drawer unit 2 at any time.

[0042] When an earthquake occurs, the anti-seismic base 3 at the bottom of the cabinet body 1 first comes into play. When the up-and-down vibration energy generated by the earthquake is transmitted to the cabinet body 1, the shock-absorbing spring 33 is compressed, converting kinetic energy into elastic potential energy and buffering the sinking and jumping of the cabinet body 1. At the same time, the hydraulic damper 34 limits the rebound speed and amplitude of the shock-absorbing spring 33 through the viscous resistance of the damping oil, avoiding excessive shaking and rebounding of the cabinet body 1. In the horizontal direction, the buffer rubber pads 43 between the drawer guide rails 4 reduce the left and right displacement and the risk of disengagement of the drawer unit 2 by using their friction and elastic deformation. The shock-absorbing rubber columns 6 inside the drawer unit 2 also absorb and disperse vibration energy during an earthquake, protecting electrical components from strong vibrations. The compression device 7 at the top of the cabinet body 1 exerts downward pressure on the drawer unit 2 through the compression plate 71, limiting the upward jumping of the drawer unit 2 during an earthquake, keeping the drawer unit 2 in a relatively stable position inside the cabinet body 1, and preventing it from disengaging from the guide rails or colliding with other components due to vibrations.

[0043] It will be apparent to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Thus, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the present application being indicated by the appended claims rather than by the above description, and it is intended to be encompassing of all changes falling within the meaning and scope of equivalents of the claims. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

Claims

1. A shock-resistant drawer-type power distribution cabinet, characterized in that: Includes cabinet (1), drawer unit (2), electrical component mounting plate (5), drawer slide (4), anti-vibration base (3), clamping device (7), ventilation and heat dissipation components (8); The cabinet (1) has a space inside for accommodating the drawer unit (2); Each drawer unit (2) has an independent outer shell. The front end of the outer shell of the drawer unit (2) is provided with an operating handle, and the rear part of the drawer unit (2) is provided with an electrical connection interface and is slidably installed in the cabinet (1). The electrical component mounting plate (5) is located inside the drawer unit (2) and is connected to the bottom of the drawer unit (2) through a shock-absorbing rubber column (6). The shock-absorbing rubber column (6) has a hollow cavity (61) inside, and the hollow cavity (61) is filled with sound-absorbing cotton (62). The electrical components are mounted on the electrical component mounting plate (5). The drawer guide rails (4) are respectively installed on the two inner side walls of the cabinet (1), including fixed guide rails (41) and movable guide rails (42). The fixed guide rails (41) are fixedly connected to the side walls of the cabinet (1) by means of welding or bolt connection, and the movable guide rails (42) are fixedly connected to the side walls of the drawer unit (2). A buffer rubber pad (43) is provided between the fixed guide rails (41) and the movable guide rails (42). The surface of the buffer rubber pad (43) is provided with anti-slip texture. The seismic base (3) is located at the bottom of the cabinet (1) and is tightly connected to the bottom of the cabinet (1). It includes an upper mounting plate (31), a lower base plate (32), and multiple shock-absorbing springs (33) and dampers (34) connected between the upper mounting plate (31) and the lower base plate (32). The shock-absorbing springs (33) are sleeved on the outer periphery of the dampers (34). The shock-absorbing springs (33) and dampers (34) are evenly distributed in a matrix between the upper mounting plate (31) and the lower base plate (32). The upper mounting plate (31) is fixed to the bottom plate of the cabinet (1) by means of welding or bolt connection. The lower base plate (32) is fixed to the surface of the mounting foundation by means of anchor bolts. The clamping device (7) is located at the top of the drawer unit (2) and includes a clamping plate (71) and an adjusting screw (72). The clamping plate (71) is located inside the drawer unit (2) at the top. The adjusting screw (72) passes through the bottom of the drawer unit (2) and is threadedly connected to the clamping plate (71). The distance between the clamping plate (71) and the drawer unit (2) can be adjusted by rotating the adjusting screw (72). The lower surface of the clamping plate (71) is provided with a rubber buffer layer (73). The ventilation and heat dissipation assembly (8) includes ventilation and heat dissipation holes opened on the side wall of the cabinet (1) and a dust filter installed in the ventilation and heat dissipation holes.

2. The earthquake-resistant drawer-type power distribution cabinet according to claim 1, characterized in that: The front panel of the cabinet (1) is provided with a transparent observation window corresponding to the position of each drawer unit (2). The transparent observation window is made of high-strength, impact-resistant transparent material, including tempered glass or plexiglass. The edge of the observation window is sealed with a sealing strip.

3. The earthquake-resistant drawer-type distribution cabinet according to claim 1, characterized in that: The damper (34) is a hydraulic damper (34) and its interior is filled with damping oil.

4. The earthquake-resistant drawer-type distribution cabinet according to claim 1, characterized in that: The connection between the buffer rubber pad (43) and the fixed guide rail (41) and the movable guide rail (42) is either a slotted type or an adhesive type.

5. The earthquake-resistant drawer-type power distribution cabinet according to claim 1, characterized in that: The shock-absorbing rubber column (6) is connected to the electrical component mounting plate (5) and the bottom of the drawer unit (2) by an embedded or bolted connection.

6. The earthquake-resistant drawer-type power distribution cabinet according to claim 1, characterized in that: The adjusting screw (72) of the clamping device (7) is provided with a rotating handle at the top, and the connection between the adjusting screw (72) and the top of the cabinet (1) is provided with a sealed bearing or a sealing sleeve.

7. The earthquake-resistant drawer-type distribution cabinet according to claim 1, characterized in that: The dust filter adopts a multi-layer structure, including a primary filter layer, a medium-efficiency filter layer and a high-efficiency filter layer. The frame of the dust filter is fixed in the ventilation and heat dissipation holes by means of slots or bolts.

8. The earthquake-resistant drawer-type power distribution cabinet according to claim 1, characterized in that: The drawer unit (2) and the cabinet (1) are slidably connected by the drawer guide rail (4), and the electrical components are electrically connected to each other and to the drawer unit (2) by the electrical connection interface and the corresponding electrical connector.

Images